Title: Multi-objective optimization design for a vertical machining center based on composite optimization method
Abstract:In order to satisfy the dynamic and static performance requirement of a machining center and minimize its weight,a composite optimization method was proposed to study design of a machining center with...In order to satisfy the dynamic and static performance requirement of a machining center and minimize its weight,a composite optimization method was proposed to study design of a machining center with multi-variable,multi-constraint and multi-objective.By combining finite element analysis with modal test,the dynamic behavior of each big part of the center was analyzed to verify the correctness of the finite element model.Then,their maximum deformation and stress were obtained with a static analysis based on the finite element model.Taking compliance as a goal,topologic optimization was adopted to design the framework shape of column structures;taking natural frequency as a goal,adaptive dynamic optimization method based on a unit structure was used to design rib structures of the machining center;taking mass and natural frequency as goals,response surface methodology was used to determine the optimal size of the structure of each part.Finally,the dynamic and static performance of the whole center was analyzed after all optimized parts of the machining center were assembled.The analysis results showed that the weight of the maching center is reduced about 4.9%,from 12749kg to 12127kg,the proposed method has higher precision and stronger practicability.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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